AspenAir’s High Efficiency Electronic Air Cleaner retrofits 21 standard sizes of filter grille locations and is designed to supports simple and fast installation. It features low-voltage wiring requiring no electrical contractor for installation. The unit permanently installs with four nylon bolts that slip into pre-drilled holes. No screws or additional drilling required. It doesn’t spark, arc, or make popping noises, and has a low static pressure of 0.25 inches at rated flow. Maintenance consists of switching the power off, opening a hinged door, replacing the dirty media, closing the door, and switching the power on. Its high collection capacity is due to design and configuration of thick media between strong electric field. Easy to read diagnostic lamps tell customer that unit is working properly.